Evidence map›Paper›PMID 31905238›Full record

ArticleFEMS microbiology letters2019

CRISPR-Cas9-mediated genome editing in vancomycin-resistant Enterococcus faecium.

Vincent de Maat, Paul B Stege, Mark Dedden, Maud Hamer, Jan-Peter van Pijkeren, Rob J L Willems, Willem van Schaik

Open access · greenAbstract read
In one paragraph

Article in FEMS microbiology letters, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
1.9field-weighted citation impact, top 13% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed, 35 citations in OpenAlex.

  1. Article
  2. Microorganisms · 2026
    Review
  3. Cell Death Mechanisms inPathogens (Basel, Switzerland) · 2025
    Review
  4. CRISPR-Cas systems in enterococci.Brazilian journal of microbiology : [publication of the Brazilian Society for Microbiology] · 2024
    Review
  5. Review
  6. Article
  7. Review
  8. Review
  9. Review
  10. Review
  11. Review
  12. CRISPR-Based Gene Editing inPharmaceuticals (Basel, Switzerland) · 2023
    Review
  13. Application of CRISPR-Cas system in the diagnosis and therapy of ESKAPE infections.Frontiers in cellular and infection microbiology · 2023
    Review
  14. Review
  15. Article
  16. Recent progress on n-butanol production by lactic acid bacteria.World journal of microbiology & biotechnology · 2021
    Review
  17. Review
  18. RecT Recombinase Expression Enables Efficient Gene Editing inApplied and environmental microbiology · 2021
    Article
  19. Review
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 2 institutions in 3 countries.

Vincent de MaatDepartment of Medical Microbiology, University Medical Centre Utrecht, Heidelberglaan 100, 3584 CX Utrecht, the Netherlands.
Paul B StegeDepartment of Medical Microbiology, University Medical Centre Utrecht, Heidelberglaan 100, 3584 CX Utrecht, the Netherlands.
Mark DeddenDepartment of Medical Microbiology, University Medical Centre Utrecht, Heidelberglaan 100, 3584 CX Utrecht, the Netherlands.
Maud HamerDepartment of Medical Microbiology, University Medical Centre Utrecht, Heidelberglaan 100, 3584 CX Utrecht, the Netherlands.
Jan-Peter van PijkerenDepartment of Food Science, A203B Babcock Hall, University of Wisconsin-Madison, Madison, WI 53706, USA.
Rob J L WillemsDepartment of Medical Microbiology, University Medical Centre Utrecht, Heidelberglaan 100, 3584 CX Utrecht, the Netherlands.
Willem van SchaikDepartment of Medical Microbiology, University Medical Centre Utrecht, Heidelberglaan 100, 3584 CX Utrecht, the Netherlands.
University Medical Center Utrecht · NLUniversity of Wisconsin–Madison · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The Gram-positive bacterium Enterococcus faecium is becoming increasingly prevalent as a cause of hospital-acquired, antibiotic-resistant infections. A fundamental part of research into E. faecium biology relies on the ability to generate targeted mutants but this process is currently labour-intensive and time-consuming, taking 4 to 5 weeks per mutant. In this report, we describe a method relying on the high recombination rates of E. faecium and the application of the Clustered Regularly Interspaced Short Palindromic Repeat (CRISPR)-Cas9 genome editing tool to more efficiently generate targeted mutants in the E. faecium chromosome. Using this tool and the multi-drug resistant clinical E. faecium strain E745, we generated a deletion mutant in the lacL gene, which encodes the large subunit of the E. faeciumβ-galactosidase. Blue/white screening using 5-bromo-4-chloro-3-indolyl-β-D-galactopyranoside (X-gal) could be used to distinguish between the wild-type and lacL deletion mutant. We also inserted two copies of gfp into the intrinsic E. faecium macrolide resistance gene msrC to generate stable green fluorescent cells. We conclude that CRISPR-Cas9 can be used to generate targeted genome modifications in E. faecium in 3 weeks, with limited hands-on time. This method can potentially be implemented in other Gram-positive bacteria with high intrinsic recombination rates.

Indexed as

Clustered Regularly Interspaced Short Palindromic RepeatsCRISPR-Associated Protein 9Enterococcus faeciumGene DeletionGene EditingGenetic TestingGreen Fluorescent ProteinsStaining and LabelingVancomycin-Resistant EnterococciCRISPR-Associated Protein 9Green Fluorescent ProteinscounterselectionCRISPR-Cas9Enterococcus faeciumgenome editingmolecular biologymutants

Identifiers

PMID31905238
PMCPMC9189978
OpenAlexW2999766599

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.